Telegraphic apparatus.



,P. KAEHLER. TELEGRAPHIC APPARATUS. APPLICATION [FILED APR. 4. I913.

Patented July 23, 1918.

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P. KAEHLER.

TELEGRAPHIC APPARATUS.

APPLlCATION FILED APR.4. m3.

Patented July 23, 1918.

2 SHEETS-SHEET 2.

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PAUL KA'EHLER, or BERLIN, GERMANY.

TELEGRAFHIC APPARATUS.

Specification of Letters Patent.

Patented July 23, 1918.

Application filed April 4, 191 3' Serial No. 758,961.

1 '0 all whom it may concern Be it known that I, PAUL KAiiiinnu,engineer, a subject of the German Ifhnperor, and resident of Berlin,Germany, have invented new and useful Improvements in TelegraphicApparatus, of which the following is a specification.

In the drawings the invention is shown in two constructional forms whichnew parts are required on one of the known Hughes type-wheiel printingtelegraphs in order to, secure the advantages of the present inven-.tion.

For information as to the Hughes telegraph reference may be had to TimHughes rt" Bmulol- TeZeg 1}. p/L .s-, by Arthur Crotch, London, 8.Rentell & 00., 1908.

Figure 1 is a sideelevation, shown partly in section, of a Hughestelegraph fitted with the new parts according to the present invention.

Fig. 2 is part of the tape as produced according to the presentinvention, to be used for the automatic transmission.

Fig. 3 is the printing-lever and shaft of a Hughes telegraph with thereleasing lever and the parts required according to the presentinvention in a somewhat modified form.

Fig. 4 is. a section on the line (3-D seen from the left through thelower punching hole and the extended printing lever.

Fig. 5 is a top view of various parts of the transmitter.

Fig. 6 is a piece of the perforated tape as it is used for the automatictransmission of telegrams by means of the transmitter shown in Figs. 3and 5.

Fig. 7 is a top. view of the arrangement according to Fig, 3 forperforating the tape.

As the Hughes telegraph may be considered as known and besides does notform any part of the present invention only such parts of the same havebeen indicated in the drawing which were necessary to show how the newparts are fitted to the Hughes telegraph and the course of the current(as fa as required for the description).

In the drawings (1. is the typewheel shaft, h the known type-wheel whichis driven and set in known in an'ncr. Attached to the type wheel is agear wheel .2 with say teeth. 'lhis gear wheel meshes with another gearwheel 2 with, say 28 teeth, which fitted on a shaft parallel to theshaft (1 The gear wheel 2 which'is likewise fitted to shaft 5 mesheswith. a gear Wheel .24, which is fitted on a shaft 7 disposed parallel,to shafts a, and Z). Both the last mentioned gears have each say 28teeth. On shaft f is further fitted a toothed guide wheel .2 whichongages with its teeth in the guide holes in the tape shown in Fig. 2and thereby advances the same when the gear revolves; This guide wheelhas 28 teeth corresponding with the 28 type panels of the type-wheel,With the ratio of gearing the tape to be perforated will be uniformlyadvanced, In order to secure an intermittent motion so that the tape isstationary during the pcitto-, rating act-ion, each second tooth isbroken, away in wheel 2 In consequence thereof the tape will stop foreach second tooth.

The rotation of the type-wheel by one type-panel (double-panel) willvnow corre-. spond to each step of the tape by one tooth of a. In orderto prevent an unintended rotation of shaft f, which may occur owing tothe absence of each second tooth in wheel 2 a locking lever (Z is fittedto shaft 7), and engages under action of a spring 0 between the teeth ofwheel .2 In thisposition it arrests the wheel 2. As soon, however, aswheel 2 is set in motion, the nose of lever (5 will be forced froin thegap between the teeth owing to its beveled bearing surfaces, and willreengage in the next gap and arrest wheel 2 until wheel 2 again impartsa fresh movement to wheel 2 The printing lever 0 of the Hughes telegraph which is in known manner forced upward by the printing cam onprinting shaft 0/; for printing a signal received, is extended beyondits axisoto the right (arm 40) and carries on this extension 40 one ormore punches 70, according to the number of holes in the respectivesignal; so for example 2 holes y each are punched for cach signal in thetape according to Fig. 2. These punches 7r; act on the tape 9 which isguided between the guide plates Z and m and over the guide wheel .2.

Owing to the rigid connection between ,0 and it) a punching motion ofthe punch will (,Ol'ltSPOl'Vl to each printing motion of the printinglcvcr. It, for example each 5th sign is printed, the tape wilt rccciveholcs, the distance between which corresponds to 5 teeth of wheel 2 as acgmsequcnce of the above described arrangement, The distance between thesignal holes in the tape therefore always is in a certain relation to"the distance of the types on the type-wheel e ployed for printing therespective signals. If the meaning of a given punched signal on the tapeis known, the meaning of the other signals on the same tape is given bytheir distance from this known signal.

.'Telegraphing always-commences after the synchronous running of thetype-wheel apparatus has been insured with the transmission of astarting signal. Therewith the first series of holes in the tape isknown as to its,reading and thus also the following series.

For automatically transmitting messages with such a perforated tape onthe same apparatus which perforated the tape, or on another Hughestelegraph, t-he said Hughes telegraphs both at the transmitting and atthe receiving station effecting in known manner the synchronism and theprinting of the messages both for control and delivery, the transmittingHughes telegraph is provided with an extension of its printing lever tothe left side, which extension has at its lower end a contact 1". At thebifur cated lower end 7l of the printing lever one or several feelers aare arranged accordingv to the number of holes for the individualsignals, which feelers bear, when the lever a is at rest, on the tape,which is guided on the one side by the roller 9 and the guide wheel .2and on the other side between the plates 0' and p. The tape is thereforeadvanced in the same manner as during the perforating operation by theaction of wheel 2 During the transmitting .of messages, however, thetape does not lie between the plates Z, on but passes under the roller9. A force acting in the direction of the arrow A will keep the tapeunder tension.

' When the type-wheel is at -rest the start'- ing signal is then inprinting positionthe tape is introduced between the perforated plates.'0 and 29 so far that the starting signal comes to lie under the feelersn. The printing lever'o with the feeler n sinks down until contact 1*bears on contact 3. This closes the circuit, and the current will passfrom receiving station, the type-wheel of whichwill be set in operation.At the same time the releasing lever 'u is turned at the transmittingstation by the sinking of lever o and by means of a pin and theconnecting bar co, whereby in known manner printing shaft 00 is engaged.The known correcting cam effects the starting of the type wheel and theprinting lever (the printing lever (1' is thrown upward by, the printingcam 7.0). The contact 1" removes from the contact 5, the feelers leavethe holes in the tape. During the downward movement of the printinglever the movement of the type wheel (the typewheel shaft) will by meansof the gearing 2 2" described and the guide wheel 2' effectthe feed ofthe tape. On their return the feelers n will either meet the solid tape(and the contacts 1 and 8 cannot contact), or the following perforatedsignal. The operation is now repeated. If this following signal is fivespaces behind the first signal, the feeler can transmit this signalowing to the tape being fed in the described manner by 2 if also on thetype wheel the 5th signal after the starting signal is in printingposition. As we, vice versa, have seen in perforating the tape, thatwhen the 5th signal is printed, the hole will be punched at a distanceof 5 spaces from the preceding signal, now in transmitting the sametypeswill be printed by aid of the perforated tape as in perforating thetape, or, in other words, we have a duplicate of the telegramtransmitted.

In the tape 9 in Fig. 2 the guide holes 2' and the current holes 3 areshown in two modifications, (group I and H). In group I one current holeis provided for each signal at each side of a guide hole, in group IIthe two current holes of a. signal alternate by half the distance of theguide holes. WVhereas in the modification according to Figs. 12 thesignal holes are punched behind each other in the direction of travel ofthe tape the modification according to Figs. 37 show the preparation andthe use of the shortened tape, in which the signal holes may be punchedin 4 rows disposed vertically or obliquely next to each other.

In Fig. 6 each spot on the tape, at which a hole may be punched isindicated by a small cross. In Fig. 3, of the known Hughes telegraphonly the printing lever c with the printing roller 45 and the printingshaft w and the printing cam 7 O, besides the releasing lever v areshown. The printing lever c is extended to the right beyond its fulcrumand has at the end of this extension 40 a :nose

10 (Figs. 3. and 4). the same as in Fig. 1, is driven by the wheel 2 twoeccentrics or cams 1 and 2 are keyed alternating by 1/4 stroke. By theirrotation they reciprocate in a rectilinear direction 611 the shaft f,which,

two plates 3 and 4 in the guide 5. In the right end of each plate arefitted each two punches 6, 7 and S, 9, respectively. These punches bearon the flat springs 11, so that when atrest, the punches do not projectbe the punches vertically from each other in each plate is equal to thestroke of the cam, the distance from thecenter of the respective cam forpunch 6 and 8, and 7 and 9, respectively are equal and such that, atgiven posi tions of the cams each punchwill be above holes in thestationary plate 30 provided in.

the line CD (Figs. 3 and 7). In consequence of the arrangement describedthere will always be only one punch beneath the nose 10 and overthe rowof holes CI), c. in matching position according to lfiigs. 3 and-7 punch7 is in punching position.

The tape to be perforated on the arrival of a telegraphic message isplaced between the plate 30 and the plates 3 and t and intermittentlyadvanced by one space of the guide holes by means of a guide wheel .2after each complete rotation of shaft (-or the cams respectively).

VV-hen, after syncln 'onism has been established the first signalcurrent arrives in known manner from the transmitting station, the typewheels will start in known manner, the printing lever will move upward,while the starting signal is in printing position. Thereby the extensionis lowered, the nose 10 of the same bearson the punch 7 in punchingposition and drives the same in the third row of holes from the topthrough the tape.

Now the type wheel is revolved by 1/28 of its circumference l panel, sothat f turns by 1/4 circumference contrary to the clockhand and punch 9moves into punching position. When the type wheel revolves further by1/28 the tape is advanced by one space, cross row II is then in punchingposition, punch 6 is above it, type a in pr nting position, and .afurther rotation punches S. 7, 9 and the types b, c, d, then advance tocross row III. If the word Esau is to be transmitted, the type c is nowprinted, the printing lever shoots up, and at the receiving stationbesides the printed character also a hole is punched into the thirdcross row, 1st longitudinal row from below, because at the moment punch6 was in punching position. The operation is a corresponding one withthe other types.

In order to automatically transmit the telegram by means of the saidperforated tape in the same succession of signals received, atransmitting attachment (Fig. 2-3 on the left and Fig. 5) with fourfeelers 12, 13, 1 15 is fitted to the transmitting Hughes telegraph. Thefeelers rock, each independently, on the shaft 16, which is journaled inthe printing lever 0. Each has a. nose 18 which; bears on the roller 17disposed beneath. This roller has four recesses IIV. alternating by 90,in which, having the length of 1/4 circumference, alternately one nose18 of each fceler can engage in the succession I. III, II, IV accordingto the succession of the punches 6, 8, 7, 9, while the other three nosesof the feelers bear on the solid part of the roller.

The perforated tape is introduced between the guide plates 19, 20, whichcontain four holes for the four feelers. Into the four holes of plate 20project four contacts The t 'ansmitting and the sending ap- 'iaratus areset, in known manner, after svnchronism has been established, c. thetype wheels are arrested at the starting nail. The roller coupled by asimple gearing with the ratio 1 :7 with the type wheel or the type wheelshaft, it will, therefore, revolve .tlnrough a right angle, when thetype wheel turns by 1/28 of its circumference one type panel.

After each revolution of the roller the tape is advanced by one guidehole. If the cross row I with the punched starting signal is now underthe feelers, first feelcr 12 will be released, then 14-, 13, 15. A thereis a punched signal under 13, the feeler will sink down, the contactswill contact, and the current will pass from the battery B over 22,spring 23, feeler 12, contact 21. into the line conductor to thereceiving apparatus, through which it will flow in known manner (asindicated by dotted lines in Fig. 1) and return through the ground to BThe current impulse will engage in known manner the type wheel, and theprinting lever will be operated.

The shaft 17 revolves further, the feeler 13 is lifted out, the circuitis broken. After the type wheel has turned by 1/28, the roller by 1 4,feeler 15 is free, the tape is again advanced. ("ross row II will nowlie under the feelers. Afte a rotation by 4/28 or 4/4 circumference,respectively, the cross row III will be in position, and after a furtherrotation feeler 12 will sink into the signal hole and a currentdespatched. In the receiving apparatus the (3th signal after thestarting signal, viz. type e is printed. This w: s also the typetransmitted by the signal hole. The following telegraphic signals aretransn'iitted in a corresponding manner. In order that the transmittingapparatus also prints, connecting rods are attached to the feelers 12 to15. These coimecting rods i l will pull. down the releasing lever '0when the feelers sink down. The printing shaft :1: is coupled in knownmanner, the printing lover (I is shot up, the feelers are, for a momentall lifted out and operate again in the manner described after theprinting lever has returned into its initial position.

It is obvious that those skilled in the art may vary the details ofconstruction and arrangrnnents of parts without departing from thespirit of my invention, and therefore I do not wish to be limited tosuch features except as may be required by the claims.

I claim:

1. In a type wheel printing telegraph. having a printing lever, thecombination of a punching device operated by the movement of theprinting lever for receiving the telegraphic message transmitted in formof hole signals in a tape, and a feed device for this tape, which movesin accompaniment to the movement of the type Wheel, and of devices fortransmitting the telegram recorded on the tape, operated by the movementof the printing lever, substantially as described.

2. In a type wheel printing telegraph, having a printing lever, thearrangement of a punching device operated by the printing lever,including several punches, and a device for moving the said punches independently and successively into and out of operative position,substantially as described.

' 3. In a type wheel printing telegraph having a printing lever, thecombination of tape perforating mechanism operated by said printinglever, and comprising a plurality of punches actuated from said printinglever, cam means for moving said punches successively into and out ofoperative position, and means for holding the tape againstmovementbeneath said punches throughout the cycle of operation of saidpunches, substantially as described.

4:. In a type wheel printing telegraph having a printing lever, thecombination of tape perforating mechanism associated with said printinglever, and transmitting means COIIle prising a plurality of contacts,and means for normally holding said contacts out of engagement with theperforated tape but permitting the contacts to successively andmomentarily move into engagement there- With, substantially asdescribed.

5. In a type wheel printing telegraph having a printing lever, thecombination of tape perforating means associated With said printinglever, and transmitting means'comprising a plurality of levers carriedon said printing lever and arranged transversely of the tape,projections on each of said levers, and a drum provided with a pluralityof recesses therein arranged to successively receive the projections onsaid levers to permit the same to descend into contact with theperforated tape, substantially, as described.

V 6. In atype Wheel printing telegraph having a printing lever, thecombination of tape perforating means associated with said printinglever, and comprising a plurality of punches arranged to be actuatedfrom said lever, means for moving said punches into and out of operativeposition, and transmitting mechanism comprising a plurality copies 0!thiepatent may be obtained for of contacts carried on said printinglever and normally arranged out of engagement with the perforated tape,and means for permitting said contacts to descend into engagement withthe perforated tape, substantially as described. o

7 In a type Wheel printing telegraph having a printing lever, thecombination of tape perforating means associated with said lever andcomprising a plurality of punches arranged to be actuated from saidprinting lever, means for moving said punches into and out of operativeposition, transmitting mechanism comprising a plurality of leverspivotally mounted on said printing lever, projections on said levers, acam contact arranged to be encountered by each of said levers, and acontinuously-rotating drum provided with a plurality of recessesarranged to receive. the projections on-said tive position, means forholding said tape against movement beneath said punches throughout thecycle of movement thereof, transmitting mechanism associated with saidprinting lever comprising a die arranged to receive the perforated tape,a contact associated with said'die, a plurality of levers I pivoted onsaid printing lever and arranged to encounter said contact and close acircuittherethrough, a projection on each of said levers, and acontinuously-rotating drum arranged to normally hold said levers out ofcontact with the perforated tape and provided with a plurality ofrecesses for the reception of said projections, whereby to permit thelevers to descend into engagement with-the perforated tape,substantially as described. 7

In testimony that I claim the foregoing as my invention I have signedmy'name in presence of two witnesses, this twenty-see 0nd day of March,1913.

Witnesses I WVOLDEMAR I-IAur'r HENRY HAsrER.

five cents each, by addressing the Commissioner of Patents, Washington,D. 0. r

